含钒TWIP钢氢致滞后断裂现象的研究  

HYDROGEN-INDUCED DELAYED FAILURE OF TWIP STEEL WITH VANADIUM ADDITION

作　　者：夏禹[1] 史文[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《上海金属》2014年第2期18-22,共5页Shanghai Metals

基　　金：国家重点基础研究发展计划(973/2010CB630802)

摘　　要：对Fe-18Mn-0.8C及Fe-18Mn-0.8C-0.2V TWIP钢进行电解充氢,研究和比较了氢致滞后断裂性能及断口形貌的变化与规律,并讨论了钒对提高TWIP钢抗氢脆性能的作用。结果显示:随着电解充氢时间的延长,两种试验钢力学性能损失率均增大,钒元素的增加提高了TWIP钢抵抗氢脆的能力,以实验电流密度充氢后的TWIP钢经放氢处理后,断后延伸率及抗拉强度基本恢复。Fe-18 Mn-0.8 C and Fe-18 Mn-0.8C-0.2V TWIP steel were electronic hydrogen charged to study and compare the performance and micrographs of fracture surfaces after hydrogen induced delayed failure of both two kinds of steels. The role of vanadium in resistance to hydrogen embrittlement was also discussed. The results showed that as the H-charging time increased, the mechanic property loss of both steels increased, the addition of V improved the resistance to hydrogen embrittlement of TWIP steel. After hydrogen-releasing treatment, the elongation and tensile strength of the TWIP steel H-charged under a 15 mA/cm2 current density was basically recovered.

关 键 词：TWIP钢 电解充氢 滞后断裂 V元素 

分 类 号：TG455[金属学及工艺—焊接]